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Difficulty: MediumPediatric Respiratory Disorders

A 10-month-old girl is evaluated at an urgent care center during the winter season. Her parents report a two-day history of nasal congestion and a mild fever, which has now progressed to a worsening, raspy cough and increased work of breathing. She has been feeding less than usual today. The patient was born at term and has received all age-appropriate vaccinations. Her temperature is 38.0°C (100.4°F), pulse is 155/min, respirations are 58/min, and pulse oximetry is 94% on room air. Physical examination reveals a fussy infant with prominent nasal flaring and mild intercostal retractions. Lung auscultation demonstrates bilateral diffuse wheezing and scattered crackles. Which of the following is the most appropriate next step in the management of this patient?

  1. Provision of supportive care with nasal suctioning and fluid maintenanceAnswer
  2. B
    Administration of nebulized albuterol
  3. C
    Administration of oral dexamethasone
  4. D
    Prescription of a course of oral amoxicillin
  5. E
    Obtaining an anteroposterior chest radiograph

Answer

Provision of supportive care with nasal suctioning and fluid maintenance
The patient's clinical presentation—an infant during the winter season with a viral prodrome followed by tachypnea, retractions, and diffuse wheezing with crackles—is classic for acute bronchiolitis. The diagnosis of bronchiolitis is primarily clinical. For infants who are well-oxygenated (SpO2 > 90% on room air) and not in severe respiratory failure, the cornerstone of management is supportive care. This involves ensuring adequate hydration and relieving nasal congestion with suctioning, particularly before feeding. Since the patient's oxygen saturation is 94% and she has only mild retractions, outpatient supportive management is the most appropriate next step.

Step-by-Step Solution

1
Identify the most likely diagnosis based on the patient's age and clinical presentation.
The infant has acute viral bronchiolitis.
The presentation of a viral prodrome (congestion, fever) followed by lower respiratory tract signs (tachypnea, wheezing, crackles) in a child under 2 years old during the winter season is the classic clinical picture of bronchiolitis.
2
Assess the severity of the respiratory distress.
The patient has mild to moderate distress but is not hypoxic.
While she has tachypnea (58/min) and mild retractions, her oxygen saturation is 94% on room air, which is above the threshold (typically 90%) for supplemental oxygen.
3
Determine the appropriate evidence-based intervention for this severity level.
Supportive care is indicated.
Current pediatric guidelines recommend supportive care (hydration, relief of nasal congestion) as the only necessary intervention for non-hypoxic infants with typical bronchiolitis.

Key Concept

Acute viral bronchiolitis is diagnosed clinically in infants under 2 years old presenting with a viral prodrome followed by wheezing and crackles; management for non-hypoxic patients is entirely supportive.
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Topics

Pediatric Respiratory Disorders

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